Belle Dingle was born in a pigsty of Wishing Well Cottage on Christmas Day 1998 to Zak and Lisa Dingle, who had no idea she was pregnant. Local vet Paddy Kirk delivered the baby as he was spending Christmas Day with the Dingles. A young Belle later goes missing on Christmas Day 2005, after she was left at home under the care of her uncle Shadrach. Daz Eden soon paid them a visit, bringing his pet ferret Spike. Although Daz told her not to, Belle let the ferret out of his cage and in a panic, chased him through the fields. As she ran to get Spike, she fell down a mine shaft. Daz dives in to help her, but they turn out to be trapped, and it looks like they will either freeze or drown. When the Dingles discover her disappearance, they are beside themselves with worry. A brave Daz manages to keep Belle afloat for hours, until they are eventually saved by the Dingles and the fire brigade. Belle is overjoyed when her brother Sam and his fiancée, Alice have a baby, Samson, a year later. In February 2006, she is a ring bearer at her cousin Marlon Dingle's wedding to Donna Windsor. She moves in with Marlon briefly just before Alice died from cancer. Whilst she was there, she refused to have a bath, so Toni Daggert challenged her to a duck race (if Toni's duck won, Belle had to have a bath but if Belle's duck won, she didn't). The whole village joined in and Belle was thrilled when she won the race. Sadly, her happiness was short lived as Zak arrived and informed Belle of Alice's death.
Belle begins playing truant, asking Shadrach to cover for her. She claims to be ill but her teacher visited and told Shadrach that Belle hardly ever went to school and didn't apply herself when she was there. Shadrach claimed he was her father, leading the teacher to ask Belle and her parents to come to a meeting at the school so Zak, Lisa and Belle went. Zak and Lisa are told that Belle was disruptive and she complained she was bored, but she is told that school isn't meant to be fun. At home, she promises to try harder. After Belle disables the ‘nanny guard' on the computer network, Lisa and Zak returned for a second meeting. Belle said she didn't realize but the head teacher doesn't believe her. Zak defends her, claiming Dingles don't lie, and Belle is suspended. With Belle at home, Zak attempts to teach her but he isn't very good. Although he taught maths - the problems involved either horse racing or fishing. When Lisa notices Zak is struggling, she suggests he teaches her botany, but this leads him to take her to strip building materials from a derelict property. When the Dingles find out, no one is impressed as Donna said the materials were stolen, and Lisa is annoyed that Zak is teaching her to steal. Realising Belle needs professional help, Zak and Lisa ask Jasmine Thomas to teach her. Jasmine is shocked by the lack of resources, but makes do, and has Belle recite a Japanese haiku about Shadrach. The Home Education Inspector later visits to discuss Belle's future and suggests she should see an educational psychologist to find out why she is so disruptive. Zak initially refuses, but changed his mind as Belle had nightmares about Tom King's death – which she witnessed. Jasmine attempts to help Belle by taking her to Home Farm so she could talk to Pearl Ladderbanks but this only makes things worse. Later, when Jasmine looks for Belle, she finds she has vanished, but it turns out Belle ran home, terrified of Pearl. When the psychologist visits, Belle initially hid to avoid him but Lisa coaxed her out. She is delighted to fly through the psychologist's "easy" questions, but she still needs Zak's reassurance that she'll always be a Dingle.
Belle's test results show that she is amongst the cleverest 2% of children her age, leading her to declare "I'm a priggin' genius!", but Zak and Lisa wonder what this means for her education. The inspector suggests a private school but Lisa disapproves of the idea. However, Zak is excited at the prospect of "the first Dingle to go to Heaton", whilst Belle dreamed of magic wands and capes. Zak and Lisa took Belle to sit her private school entrance exam and were awestruck by the establishment. A student guides them around, but she worries Zak and Lisa by telling them how disenchanted she was with the school, saying that she wanted to marry a footballer and be like Victoria Beckham. Belle leaves the examining room, downcast, telling her parents and Mrs Burgess that she had not done well, but Zak cheers her up by promising to take her for ice cream. Belle receives good news and bad news from her teacher, Mrs Burgess. She passed the exam with 98%, winning an automatic place, but she didn't get a full scholarship – meaning the Dingles would have to pay £2,000 a term. Mrs Burgess, however, is unaware they cannot afford it. Her parents argue about it, Lisa being concerned that if Belle went, she'd forget her roots and be embarrassed by her family, but Zak claims it is be the best education - but tells Belle that she was unlikely to go. However, Rosemary King took a liking to Belle and offered to pay the fees. Lisa refuses to even consider it until Samson has meningitis. Worried about the little boy, no one took any notice of Belle complaining she felt unwell until the doctor checked her. When Rosemary hears Belle is in hospital, she visits, taking flowers and truffles with her. Her arrival coincides with the doctor's, who diagnoses Belle with a bad case of flu – but ensuring Rosemary that she will be fine. Zak and Lisa knew she was getting better when she complained she was hungry. Relieved, Lisa agreed to Rosemary paying Belle's fees.
On Belle's first day, Lisa and Zak do their best to make a good impression, as they prepare to meet the headmistress. Lisa is anxious about Belle fitting in, but Belle is assigned a ‘welcome buddy' called Ayesha, who would keep her company and show her where everything was. Belle and Ayesha get on well, with Ayesha even convincing her to talk about Shadrach in class, but the teacher is unimpressed as she described Shadrach's hygiene and flatulence issues. When Belle comes home, she gave Lisa a note about a school trip to Germany. When Lisa said no Belle persuades Rosemary to give her the money, but Zak returns the cheque, saying Belle shouldn't have asked. Rosemary says she has offered and Zak agrees to discuss it with Lisa. This led to Rosemary, Zak and Lisa agreeing Rosemary would pay the fees but anything else was down to them. After Belle attends a spa day with her school friends, Lisa feels guilty at not having her friends to visit, and suggested she throw a party. Belle isn't keen and tells Rosemary she is embarrassed about the Dingle house. Rosemary suggests holding the party at Mill Cottage, so Belle invited her friends, but didn't tell Zak and Lisa. Rosemary said she needed their permission so Belle "persuaded" Shadrach to phone Rosemary, pretending to be Zak. At the party, Belle impressed her friends, claiming to live at Mill Cottage with her "auntie" Rosemary and "cousin" Grayson. However, Lisa finds out when she phoned Ayesha's mother to organize a sleepover. When Belle returns, she argues with Lisa. She is later upset to hear her parents discussing taking her out of private school. After Rosemary confesses that she had poisoned Perdy to get her sectioned, Zak ends his friendship with her, warning her to stay away from his daughter. Her parents worry about how they could afford to send Belle's school fees. Belle's head teacher, Mrs Kennedy, told them the governors weren't prepared to give Belle a free place, leaving Zak and Lisa devastated, knowing they would have to tell Belle. The Dingles tell Belle she has to leave, lying that Rosemary couldn't afford the fees. Zak later decides to compete in a bare-knuckle fight against an old adversary, Mike O’Shea, to raise the funds needed for Belle to stay at private school. When he is close to beating O'Shea, the police raid the building, ending the fight. Although Zak had almost won, he could not claim the money. Zak's granddaughter Debbie lends them the money, allowing them to send Belle back to private school. Belle attends Rosemary's funeral, and is the only person, apart from Grayson, who indicates genuine sorrow at her death.
In May 2008, the family again struggle to pay Belle's school fees. They refuse to borrow any more from Debbie, selling stolen manure from Emmerdale Haulage instead, but Matthew King takes the money when he finds out. Belle covers his car in manure, but Zak makes her apologise. When Eli Dingle accidentally backs the van into a plasma TV Matthew had bought for a presentation, an angry Matthew takes the money for the replacement out of the bonus he was going to give Zak. When his brother Jimmy convinces him to change his mind, Matthew refuses to give him the money until the new TV arrived. A furious Zak then quits his job. Lisa and Zak hope Belle will remain in the dark, but another student finds out from her father and tells Belle. Belle is upset, but a few days later, she tells her family that she was sick of the school anyway, as she was a Dingle and Dingles weren't supposed to be "posh". In November, Belle auditions for the choir but she is slammed by Nicola De Souza, causing Ashley and Laurel Thomas to tell her that she was too young. Later that month, she decides to try to see what it would be like to be blind, but this phase doesn't last long. A month later, she and Shadrach steal Christmas presents from under the Woolpack Christmas tree, but they are eventually are found out. In February 2009, she develops a friendship with Will Wylde, who had just moved to Home Farm with his family. Two months later, Zak leaves and does not come home for Easter as he was supposed to, which makes Belle upset and so she calls a Dingle Court in which Zak gets ex-communicated from the family. Zak returns a couple of days later after a drinking spree and carrying an enormous brand new TV. As Belle and Will's friendship develops, they grow closer and Belle comforts Will when he finds out the shocking news about his father's death. Maisie Wylde and Nikhil Sharma announce that they are engaged and this news affects Will; when Belle comforts him he snaps at her. Belle is left devastated. Will immediately goes to say goodbye to Belle after it is revealed they are leaving the village, and he gives her his Nintendo DS and they part on good terms. Belle gives Will a goodbye kiss on the cheek and when he walks away she is left crying. She talks to Lisa, who encourages her to see him off. Just as Maisie and Will are leaving, Belle rushes up to the taxi, shouting that she loves him - and Will shouts that he loves her too. Belle is happy that with the way things ended between them and decides to let him leave.
In 2011, Belle overhears Amy Wyatt and Victoria Sugden talking about holding a party, and sees them stashing alcohol in the barn. She hides the drinks, and blackmails them to let her come along, but she ends up drinking too much cider, and throws up all over the floor, causing an angry Lisa to have to come and collect her. Belle forms a friendship with Amy, and when she collapses, Belle rushes to get help, but Amy stops her, and tells her that she is pregnant, but doesn't want anyone else to know. She goes to the hospital with Amy, pretending to be her sister when the nurses are around, and skips classes to go and see her. However, the school call Lisa to tell her that Belle never turned up at school, and when confronted, Belle tells Zak and Lisa she was with Amy, but doesn't say anything about being at the hospital. Later, Belle goes to see Amy, who has been discharged, but Amy grabs Belle and threatens her to stay away from her. When Amy has the baby, she calls him Kyle Wyatt and Belle's excited to be an "aunt" and buys a scrap book with pictures of him in it. Belle later befriends Sean Spencer, a teenage troublemaker who arrives in the village. On her 13th birthday, Belle and Sean kiss. The following day she gives him an Christmas present of a silver car key ring, and says it reminds her of when he took her to the hospital to see baby Kyle. She pretends to need the toilet in the Woolpack, but actually goes outside to see Sean. When Zak comes to find her he sees Sean and Belle leaning in about to kiss and threatens him not to go near his daughter again. Angry, Belle refuses to speak to Zak, but he warns her that it isn't safe for her to be having a boyfriend at her age. Belle verbally lashes out at Zak and goes to her room. Soon after, Sean and Belle meet at the barn and go to the lake, but they are later found by Debbie, leaving Belle embarrassed. Their relationship ends when he confesses he had kissed Ruby Haswell.
At a New Year's Eve party, Belle meets Luke Salter, an older boy. After discovering Luke had previously dated Gemma Andrews she leaves the party. A few days later, Luke goes to Belle's house to meet her. He tells her he lied about being eighteen and is really fifteen, which makes Belle feel better about him. They share their first kiss together, and decide to keep their relationship quiet. The pair continue to meet up behind Gemma's back until she sees them at the bus stop together, where Gemma warns Belle that Luke is trouble. However, they still don't reveal their relationship, so Zak and Lisa don't find out, as they would disapprove. Whilst Belle and Lisa are home alone, Luke turns up out of the blue, forcing Lisa into inviting him around for tea. When Luke comes, he insists him and Belle go upstairs to work so they can be alone, but Zak sees through his lies and forces them both to do the washing up to keep them downstairs. As the pair leave for the bus stop, Luke accuses Belle of being a tease. He explains he just wants time alone, but Belle tells him that she will have a free house tomorrow if they skip school. The next day they are at her house, and Belle admits she hasn't had sex before. When she sees the disappointment on his face, she explains she does want to though - with him. They begin to kiss again, before Lisa runs into the house and drags Luke out, telling him to get out. Belle argues with Lisa over Luke and tries to go after him, but she is soon stopped from leaving. The next day Sam takes Belle to school via Lisa's orders so she doesn't see Luke. When Belle gets to school she tells Gemma what's happened, but afterwards she receives a text from Luke, which ends her relationship with him as she realizes he was only after sex from her.
She later falls for Sean's best friend, Thomas King, making Sean jealous. Sean sent her a Valentine's Day card and although she originally thought it was from Thomas, but she finds out it was from Sean. However, he lies and tells her it wasn't, insulting her. Gemma gives Belle a makeover to impress Thomas after Sean laughed at her. Thomas seems to develop feelings for her, but after Belle lies to her parents, they begin to punish her, especially after finding inappropriate pictures of her on her phone and evidence that Thomas took them. Belle then begins to change her behaviour so that she will get her phone and trust back. Zak decides to trust her again, angering Lisa. However, Lisa soon begins to relent. The flirting between her and Thomas grows, as Sean becomes determined to gain Belle's affections again. Sean later steals a bottle of alcohol in an attempt to impress her, but after witnessing a kiss between her and Thomas, he is so angry he smashes the bottle, and ignores Gemma. Thomas expresses his fear of her father to Belle, saying he's worried what his reaction to him will be. Marlon asks Thomas and Belle if they're together, but they reply defensively, which gets a bad reaction, as Marlon says Thomas is just like his father. Thomas then runs home and Belle shouts at Marlon, later showing up on Thomas' door and making him feel better about his father. When they later come across Marlon, Thomas apologizes for overreacting, and also says that he and Belle are together. After he asks Belle if it was okay for him to say that, she accepts his offer and they kiss. Thomas is thus seen constantly with his arm around her but she's shocked when he acts dismissive in front of her father. Belle is later happy when Sam announces he's moving in with Rachel Breckle. However, her new relationship with Thomas causes her to neglect Gemma, whilst Sean's jealousy over Belle and Thomas' relationship leaves him heartbroken, as Thomas begins to ignore him and Belle makes up excuses to avoid him. After a fight with Belle, Gemma sends Sean a suggestive photo of Belle which she had taken earlier in an attempt to get Thomas to notice her. Sean defends Belle and asks her if Thomas is making her do stuff, leading to her to angrily announce she never fancied him. Furious, he puts the picture online. When Thomas sees the photo, he angrily attacks Sean in defense of Belle, causing her to find out. An upset Belle cries to Zak before announcing she doesn't care what her parents do to her as her life is over, and she begins to ignore Thomas' calls. Sean later shows up to apologise to Belle and she forgives him, announcing she is only mad at Gemma and not him. He tells her that Thomas is running away as Jimmy and Nicola King are planning to send him away first. Belle finds Thomas, about to escape in Dan Spencer's van, and begs him to take her with him. When Paddy Kirk sees them, Thomas takes her and they drive off. Paddy announces that he saw Thomas "kidnap" Belle. When a worried Belle calls her mother the next day, Lisa tells her that Dan's van is where Thomas's father tried to rape Chas Dingle. Horrified, Belle tells Thomas who tells her to go to sleep, but he returns her to the village. Belle defends him from Zak and Lisa and when he leaves, Lisa declares she has abandoned Belle, upsetting Zak who still loves her. Eventually, Lisa begins talking to Belle again.
Belle once again grows closer to Sean as they comfort each other over Thomas's departure. After Sean's accident, Belle's constantly asking how he is. Sean later awkwardly asks Belle out, and she agrees. They make plans to sleep together, but Dom Andrews interrupts them, claiming that Sean got Gemma pregnant. Sean's devastated when Belle abandons him. A heartbroken Belle seeks advice from Debbie who tells her she needs to get revenge, so Belle then tells everyone at school that Gemma had an abortion, leading to Gemma attacking Belle and the two of them fighting. Belle is then suspended, however, Dom tells Zak and Lisa that he will stop at nothing to see Belle expelled. Belle continues to seek advice from Debbie, at one point mildly threatening to harm Gemma, which Dom hears. In a meeting with her headmaster, Belle refuses to apologise to Gemma and, when told to think about it outside, she runs away. After hearing Zak threatening to give her a beating, she finds some of Debbie's leftover alcohol and tries to drink her troubles away. She comes across Sean who confronts her about hurting Gemma and calls her pathetic. She then runs into Debbie, drunk, who tells her to go home and sober up. However, when Debbie and her daughter Sarah Sugden arrive home, they find Belle unconscious. Sarah fetches Cameron Murray to help and Debbie and Cameron take Belle to hospital. Debbie phones Zak and Lisa and they arrive with Sam and Marlon. They discover that Belle is in critical condition because the alcohol she drank was contaminated. Debbie confesses it may have been hers, leading to the others isolating her from the family. After hearing about Belle, Sean rushes to see her but Zak and Lisa push him out. As this is happening, Belle wakes up. Despite warnings that she may suffer long-term effects, the doctors say she's going to be alright and was very lucky. Belle apologizes to her mother, but Lisa says she let Belle down and apologizes, too.
Lisa and Charity Sharma take Belle home eventually where Zak and her half-brother Cain were waiting for her. Debbie then showed up with a present for Belle and even though Belle was glad to see her, Lisa sent Belle upstairs whilst the others told Debbie to stay away from her. Later, after a talk with Charity, Belle hugged Lisa and apologized again. Belle and Lisa then left on a short camping trip as Sean kept sending flowers to Belle and Zak thought she deserved some time away. When Lisa and Belle returned, Belle meets with the head teacher to talk about her future at school. She runs into Sean soon after and flirts with him. Belle later confesses to Lisa and Zak that she wants to be a doctor and they arrange for her to get work experience at the veterinary clinic. Belle is distraught when Gennie Walker dies, and stays at home with Samson. Gemma tries to apologise to Belle with festival tickets, admitting her jealousy, but she refuses her. However, Belle later finds Gemma and apologizes. They resume their friendship. After discovering that Amy was in contact with Kyle, Belle encourages her to take a picture of him to "hold onto," insisting that she wouldn't be able to say no. Zak and Lisa told Belle that Amy hadn't revealed her real identity to Kyle's adoptive grandmother, Joanie Wright, putting her chances of seeing Kyle in danger. Belle was furious and angrily confronted Amy. Gemma stays with Belle when her father takes some time away.
Belle and Sean grew close together, much to Gemma's displeasure. Gemma storms out and Belle follows her, saying that she didn't know Gemma liked Sean. Gemma calls her a selfish cow and Belle replies back that Sean wouldn't be interested in her anyway. Gemma slaps Belle, who retaliated by pushing her to the ground. Gemma hits her head on a rock and it started bleeding, rejecting Belle's offer to help. They both storm off home, but, whilst walking, Gemma collapses and falls to the floor, rolling out of view into foliage. Dom is upset that Gemma hasn't returned home and, in the morning, he arrives at the Dingles' house, expecting her to be there, as she said she may stay there overnight. The Dingles' haven't seen her and so Dom begins asking people to help him look. Harriet Finch finds Gemma's body by a hedge and an ambulance is called. In hospital, Gemma later dies from her injuries, leaving Belle distraught. Belle then tells Lisa that she killed Gemma, but Lisa forbids her from going to the police, and tries to persuade Belle to pass her guilt onto her. Lisa tells Chas and Cain and they all agree that Zak cannot find out that Belle believes she killed Gemma, as he has had a nervous breakdown and this revelation could trigger another. Belle later leaves Gemma's funeral early and runs to the police station, but is stopped by Cain. Later, Belle and Zak are alone in the house and she tells him that she believes she murdered Gemma. Zak and Lisa continuously attempt to tell Belle that it was an accident, but she disagrees, believing she killed her. She pleads that he accompanies her to the police station so she can confess to her crime. Zak agrees as he believes it would be better to let it out, as she is wracked with guilt. Belle is given bail and Lisa is distraught that Zak agreed to take her to the police, telling him that she would never forgive him if she was charged. The following day, Belle is charged with the murder of Gemma. Zak later goes round to Dom's house and informs him that Belle has been charged with the murder of his daughter. A devastated Dom punches Zak in anger and falls to the floor, crying. Days later, Cain arrives at Dom and Vanessa's house and tries to ask Dom to convince Belle not to plead guilty to his daughter's murder, but he reacts very badly and refuses. Belle remains staunch, believing she deserves to be jailed, but it becomes apparent that Lisa and Zak will do whatever it takes to change her mind and get her to change her statement. Zak locks Belle in a barn to give her a taste of what prison would be like, and refuses to give Lisa the key to let her out. Eventually, she changes her mind and she later discusses with Sean the possibility of them having a baby together to avoid a prison sentence. After several failed attempts to have sex Belle and Sean drop the idea. Belle's brother, Sam, later tries to run away with her to escape a prison sentence. But after Dom tips off the police they are caught and Belle is kept in prison until her trial. At her trial she is sentenced to three years in prison, but she was forgiven by Dom who made a statement to the court telling them that he had forgiven her. After her trial she appeals against her sentence. In August 2014, while Zak and Lisa were visiting her in prison, she told them her appeal was successful and that her sentence had been reduced to one year. Belle admits to Sean that she no longer has feelings for him and he then decides to join the army, leaving the village.
When Belle is released from prison, she finds it hard to adjust to normal life again. She confronts Gabby Thomas by threatening to kill her after being teased by her and some other kids from school at the bus stop. Belle's behavior turns erratic around her family, causing her parents to be more concerned about her well being. Belle dyes her hair dark for a new look and image. She meets Lachlan White, who recently discovered about Belle's accidental murder of Gemma. Lachlan informs Belle that someone wrote "MURDERER" on the front of her house, which Belle confronts Zak Dingle and Lisa Dingle about. It is soon revealed that the culprit was Noah Tate. In late November 2014, Belle is discovered by Ashley Thomas and Harriet Finch in the church, crying and covered in blood. It is apparent that Belle has been attacked, but she refuses to tell Zak and Lisa who the attacker was, leading to them assuming that she could have been sexually assaulted. As she struggles to cope, Belle considers trying to kill herself with painkillers, but she fails and breaks down in tears in the back of her family barn. Belle soon begins to behave erratically and after ringing up school, demanding that she will not be turning up anymore and trashing David Metcalfe's shop, Belle is seen talking to an imaginary version of Gemma, as she admits to herself in the mind that she caused the graffiti on her house, also harming herself, destroying her own portrait for a competition and putting cans of spray paint in Lachlan's bag as "Gemma" demanded her to do these things in her mind.
Belle smashes and trashes Edna Birch's house, taking her pension money. Lachlan takes photos of Belle leaving Edna's house as evidence, prior to him planning on grassing Belle up. Belle tells Lachlan in exchange for deleting the photo that she will have sex with him, but Lachlan instead deletes the photo and becomes friends with Belle. Belle finds herself in luck with a job at Paddy Kirk's surgery. Belle becomes paranoid, as she believes that everyone hates her and she quits her job at the surgery. Lachlan offers Belle a legal high pill, which she takes and is relieved to discover that the voices in her head have stopped. Belle soon begins to hear voices again and asks Lachlan for more of the legal high pills, which he gives to her. Belle is later offered a job by Katie Sugden on her new farm and Belle proudly accepts, determined not to let herself or her family down. Belle believes that "Gemma" caused Cain to become ill with his brain aneurysm. Belle's erratic behavior worsens and when Katie witnesses Belle talking to an imaginary Gemma, Belle fights Katie and bites her arm in order to escape the farm to run away. Belle locks herself in Katie's car and when Zak and Lisa try to stop her from driving away, Gemma's voice is heard on an overvoice in Belle's mind, as she is instructed by "Gemma" to run down Zak in the car. Realizing that she could never hurt her father, nor her mother or the rest of her family, Belle gives in and unlocks the door of the car and she returns home with her family. Belle reveals to Zak and Lisa that she has been hearing Gemma's voice since leaving the young offender's institute and her parents decide to contact a psychiatrist for Belle to see. It's possible that Belle could be developing the mental illness, Schizophrenia.
Belle later discovers that Katie has died and she believes that she was responsible for her death. Belle tries to kill herself in the collapsed floor of the barn and whilst distracted by Harriet Finch, Belle's brother Cain goes up to the top floor to rescue Belle. She almost falls to her death in the process but Cain saves her, as Belle breaks down in tears. She is sectioned into a psychiatric unit and she receives a visit from her second cousin, Aaron Livesy, who convinces Belle that Katie's death had nothing to do with her and she shouldn't fight battles by herself. Belle decides to stay in the psychiatric unit until she properly recovers. Belle later decides to return home to her family, but is unhappy to discover that she has been given the chance to be out of school for six months so that she can recover and get help and support from her parents. Rachel tries to set up Belle by blaming her for leaving her medication around, leading to Rachel's son, Archie "swallowing" a pill. Belle and her family are convinced that Rachel tried to set Belle up.
In July 2015, Belle is upset when she learns that her pony, Hamish has fallen ill, due to old age and has no choice but to be put to sleep. Belle agrees, but on the condition that she can be with Hamish as he is given an injection. Zak agrees and Paddy Kirk puts Hamish to sleep. Belle grieves slowly, but has the support of her family. Kirin Kotecha encounters some cordial drink. Belle explains that her Granny Clegg makes her own cordial drinks from scratch. Kirin tastes the drink and he is amazed by the flavours. He and Belle work together to try and get the cordial into fame, by selling it in pubs and shops to other residents. Belle overhears a conversation between Kirin and his father, who approves that his son should start a relationship with someone like Belle, but Kirin makes it clear that he does not like Belle in the way she thinks and would rather just be friends. Belle is upset by this but does not let it affect her friendship with Kirin. The two try to persuade Rishi Sharma to sell the cordial drink at the sweet factory. Rishi looks into some marketing research to make the drink popular for other people.
In September 2015, Belle gives her family and Joanie the impression that she and Kirin are an item, as she begins to develop feelings for him. When Joanie gives Belle advice on relationships, Belle is humiliated after Kirin rejects her when she kisses him. Eventually, Belle and Kirin grow closer and begin a low-key relationship. As Belle wants to impress Kirin, she gets some advice from relative, Chas who says she needs to dress to look attractable. Belle and Kirin have a first date, which later leads to the next level when they have sex in Belle's family barn, which leaves Belle's mother, Lisa stunned. However, realizing that Kirin does not love her, Belle calls off her short-term relationship with him.
In December 2015, Belle witnesses her father kissing Joanie Wright, leaving her devastated. In revenge, she destroys Joanie's bedsit by flooding the place. On Christmas Day, Belle throws insults at her father and Joanie, finally revealing to the whole family that Zak and Joanie are having an affair. Zak and Lisa's marriage breaks down when he lets slip he has fallen in love with Joanie. Belle confronts Joanie on New Year's Eve by spitting in her face and a second time by slapping her across the face when Joanie insults Lisa, calling her a drunk. Belle lies to Zak, saying that she is hearing voices to get her parents together to help her. Her plan fails.
Belle wants to learn to drive, so Lisa takes her out for lessons, but refuses to pay for a proper driving instructor, declaring it's just too expensive. Zak offers to teach her, but Belle has no intention of restoring civil relations with her father. The family later calls a Dingle court, and the decision is made to excommunicate Zak from the household, effectively making Cain its new head. Belle continues to support her mother as she adjusts to being a second-time divorcee.
In February 2016, Belle, along with the vast majority of the Dingles, are informed by Cain that Aaron was sexually abused by his dad Gordon when he was younger. Belle is told not to tell her dad about this, especially after he returns to the village from a holiday with Joanie, but while she is shopping in the village store with Sam and is pestered by their father, she angrily retorts the disgusting secret to a numb Zak.
As her mother's self-esteem continues to decline, Belle advises her to make a fresh start, a new life for herself with the family by her side. Lisa takes Belle's words to heart; she buys a new dress and has a makeover, and flaunts her new fabulous look at her 60th birthday party in the Woolpack, only to shock Belle by inviting Zak and Joanie along. However, Lisa declares she has seen a solicitor and is divorcing Zak. The news comes as a half-expected shock to both Belle and the rest of the family.
In March 2016, Belle went to Gordon's plea hearing to support Aaron with Lisa, Chas and Robert on his side. Gordon pretends to be ill and then collapse with Aaron, Belle, Lisa, Chas and Robert watching in horror. 2 weeks later, Belle cuts her hand on some glass, so she encounters Jermaine Bailey who treats her hand. Belle is attracted to him and when Jermaine asks her out on a date, she agrees. A few days later, Belle suffers an allergic reaction to some perfume, so she goes to see her doctor, but is shocked when she overhears that Jermaine is married. After passionately kissing him, Belle makes it clear to Jermaine that she does not want to be like her father, who had an affair with Joanie. Belle struggles to resist temptation, as her crush on Jermaine develops.
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